Hey here is the answer,
It is a globular protein, it contains one iron atom, that can bind one oxygen molecule. Therefore it has high affinity for oxygen.
Hope this helps you...
The right answer is b. Tree.
Some plants (like trees) have evolved with different unusual nutritional adaptations over time. Heterotrophic plants are plants that use only or partly a source of organic carbon to grow, unlike the most common autotrophic plants, which use inorganic carbon and water to grow, often through the process of photosynthesis (photoautotrophic).
